drm/i915: request ring to be pinned above GUC_WOPCM_TOP
authorDaniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Fri, 23 Dec 2016 23:56:21 +0000 (15:56 -0800)
committerChris Wilson <chris@chris-wilson.co.uk>
Sat, 24 Dec 2016 10:06:59 +0000 (10:06 +0000)
commitd3ef1af6fdb67705d4569ac4b6ee11d91f6ab794
tree5beca98e830dbf04f905326874e9a48edd30934f
parent00c25e3f40083a6d5f1111955baccd287ee49258
drm/i915: request ring to be pinned above GUC_WOPCM_TOP

GuC will validate the ring offset and fail if it is in the
[0, GUC_WOPCM_TOP) range. The bias is conditionally applied only
if GuC loading is enabled (we can't check for guc submission enabled as
in other cases because HuC loading requires this fix).

Note that the default context is processed before enable_guc_loading is
sanitized, so we might still apply the bias to its ring even if it is
not needed.

v2: compute the value during ctx init and pass it to
    intel_ring_pin (Chris), updated commit message

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: MichaƂ Winiarski <michal.winiarski@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1482537382-28584-1-git-send-email-daniele.ceraolospurio@intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/i915_gem_context.c
drivers/gpu/drm/i915/intel_lrc.c
drivers/gpu/drm/i915/intel_ringbuffer.c
drivers/gpu/drm/i915/intel_ringbuffer.h